Well drilling



I. F. MOODY.

WELL DRILLING APPLIANCE.

APPLICATION man MAR. 15. 1919.

Patented Nov. 25, 1919.

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WELL DRILLING APPLlANCE. 1

APPLICATION FILED MAR. 15. 1919.

Patentd Nov. 25, .1919.

3 SHEETS-SHEET 2- lwvwntoz J. F. MOODY. WELL DRILUNGIAPPLIANCE.

APPLICATION FILED MAR. 15. 1919.

Patilted Nov. 25, 1919.

3 SHEETS-SHEET 3- JOSEPH F. MOODY, 0F-. ALU'G USTA, KANSAS.

WELL-DRILLING arrmnivon.

Specification of Letters Patent.

Patented Nov. 25, 1 919.

' Application .fil'ed March 15, 1919. Serial -No. 282,829.

To all whom it may concern Be it known that I, Josnrn F. Moonr, a citizen of the 'United States, residing at Augusta, in the county of Butler and State of Kansas, have invented new and useful Improvements in 'WVell-Drilling Appliances, of which the following isa specification.

This invention. relates to improvements in well drilling appliances, and more particularly an appliance for screwing and unscrewing'the casing or pipe sections.

The invention has for its object to provide a novel and improved power-driven device for the purpose stated, which is rapid in operation and easily controlled, and to this end it consists'in a novel combination and arrangement of parts to be hereinafter de scribed and claimed.

In order that the invention may be better understood, reference is had to the accompanying drawings forming a 'part of this specification, and in sald draw1ngs Figure 1 is. a side elevation of the appliance;

Fig. 2 is a plan viewthereof;

Fig. '3 is a cross section on the line 33 of Fig. 1, with some of the parts shown in I elevation;

Fig. 1 is a sectional detail of a coupling;

Fig. 5'is an end viewof said coupling;

'Fig. '6 is a plan view of agripping device; v -Fig. 7 is a plan view ofanother gripping device;

Fig. 8 is a section on the line 88 of Fig. .2, and

Fig. 9 is a section on the line 9'-9 of Fig. 2.

Referring specifically to the drawings, 10 denotes a platform which is carried by a wheeled supporting frame which holdsthe apparatus in operating position. and facilitates transportation from one ob to another.

The frame is composed of acrossbeam 11 from the ends of which rise standards '12 connected at the top by a cross beam 13 which supports the forward end of the platform 10. Diagonal braces 14le'xtend between the beam 11 and thestan'dards 12,, and Ebetw'een the saidibeam and. the braces extend struts T15. The'beamfll also supports ajpair of laterally spaced longitudinal bars 16 con-. nectedat their rearends by across beam 17 and here supporting a pair of standards 18 connectedat the top by a cross beam 19 and l supporting the rearendofthe platformlO. V

The bars 16 project at their forward ends 'from the beam 11 and here carry certain mechanlsm to be presently described. Between'the bars 16,1the beams 11 and '17 supanother.

The frame hereinbefore describedis supported by two Wheels 21 located at the forward end thereof. In the standards 12 are guide ways in which are mounted springbacked blocks 22 which carry the spindles 23 of the wheels 21. Into the tops of the standards are threaded screws 24 which bear on blocks 25 located above the blocks 22,

springs 26 being interposed between said blocks. The frame is therefore cushioned and jars are taken up by the springs when the appliance is being transported. It will also be evident that the frame can be leveled when the appliance is placed in operative position, this being done by the screws 2 L. From the rear facesof the slide blocks 22 extend pins 27 which seat in guide slots 28 in the struts 15 and also in slots 29 in the standards 12 back of the guideways in which the slide blocks seat.

In the forward end of the platform is a circular opening 30 which is shouldered, as

shownat 31, to seat a rotary horizontally positionedtable 32 having its top formed with a circular rack 33. This turntable is mally closing the outer end of the opening 34, and upon removing[saidsec'tiomth cas- -ing'se ction 3501* other work to be operated ,on niay enter-the open ng. To the top {of the table :is detachably secured a work guide plate '37 for the casingsection, said plate having a slot 38 through which the work passes. Various .guide plates, according to the diameterof the casing section to be operated omxwill he'provided.

, The table 32 carries a device for gripping comprises a segmentalhea'd'39 closed up by the casing section 35. This gripping device a link or gate which is pivoted at one end to the head and has'its other end detachably fastened to. the corresponding side of the head. Inside the head are two opposite, pivoted dogs 42 having teethto engage the casing section. The free ends of the I dogs are straddled by the. branches 46 of a fork the stem 47 of which is pivoted at 48 to the head 39. When the fork is swung in one direction one of the dogs 42 is forced into gripping engagement with the casing section, and when the fork is swung in the opposite direction, the other dog takes hold. This gripping device is substantially the same as the one disclosed in my previous application filed August 10, 1918, Serial No. 249284.

The fork stem 47 is slidably-mounted on a vertical rod 49 carried by the turn-table 32 and depending from the bottomthereof directly beneath the rack 33. From the bottom ofthe table also extends a stirrup 50 which supports the lower end of the rod 49, and'betweenthe fork stem 47 and the stirrup a spring 51 is coiled around the rod,

this spring holding the stem elevated on the rod. The stem, however, is free to slide on the rod so that the gripping device 39may follow the casing section 35 down or'iip as it is being screwed down or unscrewed. vDownward movement of the stem is resisted by the spring and hence the gripping device is yieldingly supported, and its downstraddle a guide bloek'47 through which i the rod 49 passes, said block having side grooves in which the end sections of the stem seat, and said sections are connected at-their rear ends by a plate 48 between which latter and the block is interposed a spring 49% The gripping device is therefore free to yield rearwardly, and it isnormally held advanced by the spring'49 Beneath the hereinbefore described gripping device is a second gripping device 51 constructed in substantially the same man ner, but having no vertical sliding movement, and'having its gate52 held closed by a lever 53 so thatit can be easily opened. This lower gripping device does not revolve 7 and its function is to grip and 'hold the lower casing section 54, or the collar 54 69 to screw on or be unscrewed. The fork stem 54 of the lower gripping ldevice is supported by a block 55 which is pivoted, as

while the upper section 35 isbeing turned shown at 56, on a cross bar 57 carried by forward extensions 5.8v of the bars in ad- Vance of the cross beam 11. The fork stem is longitudinally slotted as shown at 59 to straddle the block 55, and between the block and a cross bar 59 closing up the rear end of the slot is interposed a coiled spring 60 which tends to hold the gripping device normally advanced toward the casing. section 54, but allows it to yield rearwardly, and as the pivot 56 allows the gripping device to swing laterally, itreadily accommodates itself to thepart to be gripped.

The forward extremities of the bars 58 are flared so that the casing section 54 may readily enter therebetween and they also carry a recessed guide plate 61 the plate 37. V

The frame bars 16 support a steam engine similar to gear 64to the shaft'63, and for disconnecting'the same. The bearings for the various shafts are all carried by the platform 10.

It will be evident from the foregoing that when the upper casing section 35 is engaged or other suitable fiuid-pressure motor 62.

by the gripping device 39, and the lower section 54 or the collar 54 by the gripping device 51, said upper section will be screwed or unscrewed when the clutch 71 is engaged the turn-table 32-being rotated through the gearing hereinbefore described, and as the grlpping device 39 is carried around with the table, the casing section is screwed on or unscrewed according to the direction the table is being rotated, thev direction of rotation being governed by the engine 62 which is reversible; or any other expedient may be resorted to for reversing the direction of rotation of the driving means.

The turn-table 32 can also be rotated by a jerk line 72 attachedto the crank of some rotatablepower-driven member of the drilling machinery, as in case, Serial No. 249284, filed Aug. 10, 1918. The line 72 will be attached tov a leveri'7 5 carryingaspring pawl whichlengages"aratchet wheel 76 on one of 'the'shafts 69. The line pulls the ratchet lever in one direction and itis pulled back byline 77 having a weight 78 attached to its end. The pulley .79 for] the weighted line 77. A ratchet lever may be attached to each shaft 69 so that a continu'ousrotary motion may be given the table by having one lever make platform 10 carries a guide a working stroke while the other lever makes the return stroke;

As the ,entirel'appliance is portable aiid mounted on a truck, it can be readily transported'and placed in position for use. The forward end of the tongue 29 may he supiao ported by a block 80 carried by an arch 81, the block having an aperture in which the tongue loosely seats so that the appliance may be shoved forward or backed on or off the casing sections. The block also serves to hold the appliance so that it cannot swing around when in operation. The block 80 works in vertical guides 82 and is adjustable by a screw 83 to level the appliance. The arch 81 will be bolted to the floor 8st of the rig. The forward ends of the bars 58 rest on blocks 85 when the appliance is in use.

In order to protect the engine from damage by excessive loads liable to be thrown thereon, the driven member of the clutch 71 is carried by a hollow shaft 86 loose on the shaft 63 and having a flanged pulley 87. On the shaft 63 is fast a pulley or disk 88 which is engaged by friction bands 89 carried by the inside of the flange of the pulley S7. The ends of the bands are adjustably secured to ears 90 on the pulley flanges by bolts 91, so that the grip of the bands on the pulley 88 may be adjusted. The motion of the shaft 63 is therefore transmitted to the shaft 86 through a slip coupling, and'if an excessive load is thrown on the shaft 86, the pulley 88 slips. The friction bands 89 can be adjusted to hold whatever load the engine is designed to stand.

The pivot bolts 89 of the dogs 42 also serve to secure the gate or link 40. One of these bolts is tubular to receive a removable pin 10* for holding the detachable end of the gate.

I claim:

1. A well-drilling appliance comprising a supporting frame, a turn-table carried by said frame, a work gripping device carried by the turn-table, a pivoted block carried by the supporting frame, a work-gripping device slidably supported by said block and yieldable transversely of the work, and means for operating the turn-table.

2. Awell-drilling appliance comprising a portable Wheeled supporting frame, a turntable carried by said frame, a work gripping device carried by the turn-table, means for operating the turn-table, a draft tongue extending from the frame, and means engageable with the tonguefor holding the frame stationary.

3. A well-drilling appliance comprising a portable wheeled supporting frame, a turntable carried by said frame, a work gripping device carried by the turn-table, means for operating the turn-table, a draft tongue ex tending from the frame, and vertically adjustable means engageable with the tongue for holding the frame stationary.

4. A well-drilling appliance comprising a supporting frame, a turn-table carried by said frame, a work gripping device carried by the turn-table, a work gripping device carried by the supporting frame beneath the first mentioned gripping device, and yieldable transversely of the Work, and means for operating the turntable.

In testimony whereof I affix my signature.

JOSEPH F. MOODY. 

